Question

A body of mass 1 kg has a kinetic energy 1 joule when its speed is
a) 0.45 m/s
b) 1 m/s
c) 1.4m/s
d) 4.4 m/s
Thank you

please help urgency with solution

Answer 1

answer would be 1 m/s because K.E. =1/2 mv^2 so v^2 =1 so v=1m/s

Answer 2

it Is option b.

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